$B983/47491: Multiply by Zero Byte
Jump from $BA5B:
B983: A2 25 LDX #$25
Jump from $B99B, $B99D:
B985: B4 04 LDY $04,X ; Jump Vector: Convert FAC to Integer
B987: 84 70 STY $70 ; FAC low-order rounding
B989: B4 03 LDY $03,X ; Jump Vector: Convert FAC to Integer
B98B: 94 04 STY $04,X ; Jump Vector: Convert FAC to Integer
B98D: B4 02 LDY $02,X ; Unused
B98F: 94 03 STY $03,X ; Jump Vector: Convert FAC to Integer
B991: B4 01 LDY $01,X ; 6510 On-chip 8-bit Input/Output Register
B993: 94 02 STY $02,X ; Unused
B995: A4 68 LDY $68 ; Bit Overflow Area during normalisation Routine
B997: 94 01 STY $01,X ; 6510 On-chip 8-bit Input/Output Register
Jump from $B862, $BCB5:
B999: 69 08 ADC #$08
B99B: 30 E8 BMI $B985
B99D: F0 E6 BEQ $B985
B99F: E9 08 SBC #$08
B9A1: A8 TAY
B9A2: A5 70 LDA $70 ; FAC low-order rounding
B9A4: B0 14 BCS $B9BA
Jump from $B9B8:
B9A6: 16 01 ASL $01,X ; 6510 On-chip 8-bit Input/Output Register
B9A8: 90 02 BCC $B9AC
B9AA: F6 01 INC $01,X ; 6510 On-chip 8-bit Input/Output Register
Jump from $B9A8:
B9AC: 76 01 ROR $01,X ; 6510 On-chip 8-bit Input/Output Register
B9AE: 76 01 ROR $01,X ; 6510 On-chip 8-bit Input/Output Register
Jump from $B8A0, $BCC6:
B9B0: 76 02 ROR $02,X ; Unused
B9B2: 76 03 ROR $03,X ; Jump Vector: Convert FAC to Integer
B9B4: 76 04 ROR $04,X ; Jump Vector: Convert FAC to Integer
B9B6: 6A ROR
B9B7: C8 INY
B9B8: D0 EC BNE $B9A6
Jump from $B9A4:
B9BA: 18 CLC
B9BB: 60 RTS
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